<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <table align="center" border="1" cellpadding="20" cellspacing="0" width="500" height="500">
        <thead>
            <tr>
                <th>姓名</th>
                <th>性别</th>
                <th>年龄</th>
            </tr>
        </thead>
        <!-- 快捷键 -->
        <!-- shift+alt+向下 -->
        <tr>
            <td >张三</td>
            <td rowspan="2">男</td>
            <td>3</td>
        </tr>
        <tr>
            <td>李四</td>
             <!-- <td>男</td>  -->
            <td>4</td>
        </tr>
        <tr>
            <td colspan="2" >王五/女</td>
            <!-- <td>女</td>  -->
            <td>5</td>
        </tr>
    </table>
</body>
</html>